Is the Sony A7R VI worth the upgrade for high-resolution photography?

What is the Sony A7R VI?

The Sony A7R VI is a high-resolution, full-frame mirrorless camera that functions as a versatile tool for both professional photography and cinematic video production. It features a 66.8-megapixel stacked sensor and the Bionz XR2 processor, marking a shift toward high-speed performance in cameras traditionally reserved for static studio work.

According to technical specifications released by Sony, this model bridges the gap between resolution-focused imaging and high-speed action photography. Historically, high-megapixel cameras were limited by slow burst rates and poor low-light performance. The A7R VI challenges this legacy by utilizing a stacked sensor architecture that significantly reduces read-out times, allowing for faster autofocus and more capable video recording.

Why does a stacked sensor matter for high-resolution cameras?